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Sports Medicine—Open

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https://www.readbyqxmd.com/read/30317397/the-effects-of-endurance-exercise-in-hypoxia-on-acid-base-balance-and-potassium-kinetics-a-randomized-crossover-design-in-male-endurance-athletes
#1
Daichi Sumi, Chihiro Kojima, Nobukazu Kasai, Kazushige Goto
BACKGROUND: Exercise-induced disturbance of acid-base balance and accumulation of extracellular potassium (K+ ) are suggested to elicit fatigue. Exercise under hypoxic conditions may augment exercise-induced alterations of these two factors compared with exercise under normoxia. In the present study, we investigated acid-base balance and potassium kinetics in response to exercise under moderate hypoxic conditions in endurance athletes. METHODS: Nine trained middle-to-long distance athletes [maximal oxygen uptake (VO2max ) 57...
October 13, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/30291523/effects-of-pseudoephedrine-on-parameters-affecting-exercise-performance-a-meta-analysis
#2
REVIEW
Maria D Gheorghiev, Farzad Hosseini, Jason Moran, Chris E Cooper
BACKGROUND: Pseudoephedrine (PSE), a sympathomimetic drug, commonly used in nasal decongestants, is currently banned in sports by the World Anti-Doping Agency (WADA), as its stimulant activity is claimed to enhance performance. This meta-analysis described the effects of PSE on factors relating to sport performance. METHODS: All included studies were randomised placebo-controlled trials and were conducted in a double blind crossover fashion. All participants (males and females) were deemed to be healthy...
October 5, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/30238206/occurrence-risk-factors-prognosis-and-prevention-of-swimming-induced-pulmonary-oedema-a-systematic-review
#3
REVIEW
Sarah Spencer, John Dickinson, Lindsay Forbes
BACKGROUND: Swimming-induced pulmonary oedema (SIPE) can affect people with no underlying health problems, but may be life threatening and is poorly understood. The aim of this systematic review was to synthesise the evidence on SIPE incidence, prevalence, risk factors, short- and long-term outcomes, recurrence and effectiveness of interventions to prevent recurrences. METHODS: We carried out a literature search using bibliographic databases and reference lists...
September 20, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/30178072/the-effect-of-physical-activity-interventions-comprising-wearables-and-smartphone-applications-on-physical-activity-a-systematic-review-and-meta-analysis
#4
REVIEW
Roxanne Gal, Anne M May, Elon J van Overmeeren, Monique Simons, Evelyn M Monninkhof
BACKGROUND: Worldwide physical activity levels of adults are declining, which is associated with increased chronic disease risk. Wearables and smartphone applications offer new opportunities to change physical activity behaviour. This systematic review summarizes the evidence regarding the effect of wearables and smartphone applications on promoting physical activity. METHODS: PubMed, EMBASE and Cochrane databases were searched for RCTs, published since January 2008, on wearables and smartphone applications to promote physical activity...
September 3, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/30128862/perceived-links-between-playing-surfaces-and-injury-a-worldwide-study-of-elite-association-football-players
#5
Aimée C Mears, Paul Osei-Owusu, Andy R Harland, Alun Owen, Jonathan R Roberts
BACKGROUND: Injuries in association football (soccer) are debilitating for players and can also be detrimental to the success of a team or club. The type or condition of a playing surface has been empirically linked to injuries, yet results are inconclusive. The overall purpose of this study was to analyse elite football players' perceived links between playing surfaces and injury from a worldwide cohort of players. The results of this study can help to inform areas for future playing surface research aimed at trying to alleviate user concerns and meet user (i...
August 20, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/30128825/normative-values-for-self-reported-benchmark-workout-scores-in-crossfit%C3%A2-practitioners
#6
Gerald T Mangine, Brant Cebulla, Yuri Feito
BACKGROUND: CrossFit® practitioners commonly track progress by monitoring their ability to complete a variety of standardized benchmark workouts within a typical class setting. However, objective assessment of progress is challenging because normative data does not currently exist for any of these benchmark workouts. Therefore, the purpose of this study was to develop normative values for five common benchmark workouts (i.e., Fran, Grace, Helen, Filthy-50 [F50], and Fight-Gone-Bad [FGB])...
August 20, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/30128805/the-effect-of-resistance-training-interventions-on-weight-status-in-youth-a-meta-analysis
#7
REVIEW
Helen Collins, Samantha Fawkner, Josephine N Booth, Audrey Duncan
BACKGROUND: There has been a rise in research into obesity prevention and treatment programmes in youth, including the effectiveness of resistance-based exercise. The purpose of this meta-analysis was to examine the effect of resistance training interventions on weight status in youth. METHODS: Meta-analysis followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines and was registered on PROSPERO (registration number CRD42016038365)...
August 20, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/30112621/associations-of-sport-participation-with-self-perception-exercise-self-efficacy-and-quality-of-life-among-children-and-adolescents-with-a-physical-disability-or-chronic-disease-a-cross-sectional-study
#8
Saskia J Te Velde, Kristel Lankhorst, Maremka Zwinkels, Olaf Verschuren, Tim Takken, Janke de Groot
BACKGROUND: Little evidence is available about how sports participation influences psychosocial health and quality of life in children and adolescents with a disability or chronic disease. Therefore, the aim of the current study is to assess the association of sports participation with psychosocial health and with quality of life, among children and adolescents with a disability. METHODS: In a cross-sectional study, 195 children and adolescents with physical disabilities or chronic diseases (11% cardiovascular, 5% pulmonary, 8% metabolic, 8% musculoskeletal/orthopaedic, 52% neuromuscular and 9% immunological diseases and 1% with cancer), aged 10-19 years, completed questionnaires to assess sports participation, health-related quality of life (DCGM-37), self-perceptions and global self-worth (SPPC or SPPA) and exercise self-efficacy...
August 15, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/30094753/a-narrative-review-of-four-different-new-techniques-in-primary-anterior-cruciate-ligament-repair-back-to-the-future-or-another-trend
#9
REVIEW
Michael-Alexander Malahias, Dimitrios Chytas, Kaori Nakamura, Vasileios Raoulis, Masashi Yokota, Vasileios S Nikolaou
Recently, four different operative techniques, referring to the primary anterior cruciate ligament (ACL) repair, were described. These are the dynamic intraligamentary stabilization (DIS) with Ligamys™, the Bridge-enhanced repair (BEAR), the use of internal brace, and the refixation with suture anchors. The purpose of this study was to assess the already-published, clinical, and pre-clinical results of those techniques. A literature review was conducted and implemented by three independent researchers. Inclusion criteria were clinical or cadaveric or animal studies about patients suffering from ACL rupture, who were treated with one of those four different arthroscopic techniques of primary ACL repair...
August 9, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/30076500/weekly-training-frequency-effects-on-strength-gain-a-meta-analysis
#10
REVIEW
Grant W Ralston, Lon Kilgore, Frank B Wyatt, Duncan Buchan, Julien S Baker
BACKGROUND: The current recommendations for resistance training (RT) frequency range from 2 to 5 days per week (days week- 1 ) depending on the subjects' training status. However, the relationship between RT frequency and muscular strength remains controversial with reported variances existing across different population groups. We conducted a meta-analysis that (1) quantified the effects of low (LF; 1 day week- 1 ), medium (MF; 2 days week- 1 ), or high (HF; ≥ 3 days week- 1 ) RT frequency on muscular strength per exercise; (2) examined the effects of different RT frequency on one repetition maximum (1RM) strength gain profiles (multi-joint exercises and single joint exercises); (3) examined the effects of different RT frequency on 1RM strength gain when RT volume is equated; and (4) examined the effects of different RT frequency on 1RM strength gains on upper and lower body...
August 3, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/30069801/exercise-in-pregnancy-and-children-s-cardiometabolic-risk-factors-a-systematic-review-and-meta-analysis
#11
REVIEW
Laetitia Guillemette, Jacqueline L Hay, D Scott Kehler, Naomi C Hamm, Christopher Oldfield, Jonathan M McGavock, Todd A Duhamel
BACKGROUND: Maternal metabolic health during the prenatal period is an established determinant of cardiometabolic disease risk. Many studies have focused on poor offspring outcomes after exposure to poor maternal health, while few have systematically appraised the evidence surrounding the role of maternal exercise in decreasing this risk. The aim of this study is to characterize and quantify the specific impact of prenatal exercise on children's cardiometabolic health markers, at birth and in childhood...
August 2, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/30054756/the-variability-of-sleep-among-elite-athletes
#12
REVIEW
Mathieu Nedelec, Anis Aloulou, François Duforez, Tim Meyer, Gregory Dupont
Practicing sport at the highest level is typically accompanied by several stressors and restrictions on personal life. Elite athletes' lifestyle delivers a significant challenge to sleep, due to both the physiological and psychological demands, and the training and competition schedules. Inter-individual variability of sleep patterns (e.g., sleep requirements, chronotype) may have important implications not only for recovery and training schedules but also for the choice of measures to possibly improve sleep...
July 27, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/30022294/screening-tools-as-a-predictor-of-injury-in-dance-systematic-literature-review-and-meta-analysis
#13
REVIEW
Ross Armstrong, Nicola Relph
BACKGROUND: Dance involves movements of complexity and physical intensity which result in stress on the body. As a consequence, dancers are at risk of injury which can impact on their well-being. Screening tools are used for injury prevention to identify those dancers at risk of injury. The aim of this study was to investigate which screening tools can predict injury in dancers, encompassing all dance genres, levels and ages. METHODS: An electronic search of seven databases from their inception to December 2017 was conducted...
July 18, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/30014195/contemporary-perspectives-of-core-stability-training-for-dynamic-athletic-performance-a-survey-of-athletes-coaches-sports-science-and-sports-medicine-practitioners
#14
David R Clark, Michael I Lambert, Angus M Hunter
BACKGROUND: Core stability training has grown in popularity over 25 years, initially for back pain prevention or therapy. Subsequently, it developed as a mode of exercise training for health, fitness and sport. The scientific basis for traditional core stability exercise has recently been questioned and challenged, especially in relation to dynamic athletic performance. Reviews have called for clarity on what constitutes anatomy and function of the core, especially in healthy and uninjured people...
July 16, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/30003501/development-of-an-educational-program-for-non-professional-soccer-coaches-in-charge-of-community-based-soccer-in-men-with-prostate-cancer-a-qualitative-study
#15
Eik Dybboe Bjerre, Mette Leth, Nanna Maria Hammer, Julie Midtgaard
BACKGROUND: While clinical trials have demonstrated the benefits of structured exercise for prostate cancer survivors, few attempts have been made to investigate and implement sustainable community-based exercise programs supporting adoption of long-term physical activity behavior. Against this background, the aims of this study was to explore the perspectives of experts and stakeholders on the development of a training course and intervention manual used to support the delivery of community-based soccer training in men with prostate cancer (the FC Prostate Community [FCPC] trial)...
July 13, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/29987522/the-psychophysiological-regulation-of-pacing-behaviour-and-performance-fatigability-during-long-distance-running-with-locomotor-muscle-fatigue-and-exercise-induced-muscle-damage-in-highly-trained-runners
#16
Andreas Venhorst, Dominic P Micklewright, Timothy D Noakes
BACKGROUND: Locomotor muscle fatigue (LMMF) and exercise-induced muscle damage (EIMD) are common conditions experienced during long-distance running due to the pooled effect of mechanical and metabolic strain on the locomotor muscles. However, little is known about the instant effects of combined LMMF and EIMD on pacing behaviour and performance during the decisive final stages of 'real-world' long-distance running events. METHODS: Twenty-two highly trained runners (11 females) completed two maximal self-paced 20-km treadmill time trials in a counterbalanced crossover design: (A) in a tapered condition and (B) with LMMF and EIMD...
July 10, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/29987475/modelling-perception-action-coupling-in-the-phenomenological-experience-of-hitting-the-wall-during-long-distance-running-with-exercise-induced-muscle-damage-in-highly-trained-runners
#17
Andreas Venhorst, Dominic P Micklewright, Timothy D Noakes
BACKGROUND: "Hitting the wall" (HTW) can be understood as a psychophysiological stress process characterised by (A) discrete and poignant onset, (B) dynamic interplay between physiological, affective, motivational, cognitive, and behavioural systems, and (C) unintended alteration of pace and performance. A preceding companion article investigated the psychophysiological responses to 20-km self-paced treadmill time trials after producing exercise-induced muscle damage (EIMD) via a standardised muscle-lengthening contraction protocol...
July 10, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/29923108/assessing-cardiorespiratory-fitness-of-soccer-players-is-test-specificity-the-issue-a-review
#18
Monèm Jemni, Mohammad Shoaib Prince, Julien S Baker
It is important that players and coaches have access to objective information on soccer player's physical status for team selection and training purposes. Physiological tests can provide this information. Physiological testing in laboratories and field settings are very common, but both methods have been questioned because of their specificity and accuracy respectively. Currently, football players have their direct aerobic fitness assessed in laboratories using treadmills or cycle ergometers, whilst indirect measures (using estimation of aerobic performance) are performed in the field, typically comprising multiple shuttle runs back and forth over a set distance...
June 19, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/29916055/the-what-and-how-of-video-analysis-research-in-rugby-union-a-critical-review
#19
REVIEW
Steve den Hollander, Ben Jones, Michael Lambert, Sharief Hendricks
BACKGROUND: Video analysis is a common tool used in rugby union research to describe match performance. Studies using video analysis range from broad statistical studies of commercial databases to in-depth case-studies of specific match events. The range of types of studies using video analysis in rugby union, and how different studies apply the methodology, can make it difficult to compare the results of studies and translate the findings to a real-world setting. In attempt to consolidate the information on video analysis in rugby, a critical review of the literature was performed...
June 18, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/29884972/the-effect-of-foam-rolling-for-three-consecutive-days-on-muscular-efficiency-and-range-of-motion
#20
Lewis J Macgregor, Malcolm M Fairweather, Ryan M Bennett, Angus M Hunter
BACKGROUND: Foam rolling (FR) has been shown to alleviate some symptoms of exercise-induced muscle damage and has been suggested to increase range of motion (ROM) without negatively impacting strength. However, it is unclear what neuromuscular effects, if any, mediate these changes. METHODS: In a randomized, crossover design, 16 healthy active males completed 2 min of rest or FR of the knee extensors on three consecutive days. Mechanical properties of vastus lateralis (VL) and rectus femoris (RF) were assessed via Tensiomyography...
June 8, 2018: Sports Medicine—Open
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